• If you have paid writing credits, include them. Otherwise, not.
• If you have self-published a novel that has sold several thousand copies (not giveaways), include it. Otherwise, not.
• If you have won a recognized writing award (e.g., the Pulitzer), include it. Otherwise, not.
• If you have a degree and/or life experience that relates directly to your novel (e.g., you've written about time travel and you are a time traveler), include it. Otherwise, not.
• If you have a marketable social presence related to your work (e.g., your nonfiction is about the mysterious disappearance of the world's largest model train layout, and you are followed by five million model train enthusiasts) include it. Otherwise, not.
• If you are world famous for any reason whatsoever, include it. (There is no otherwise on this one.)
• If you have none of the above, leave the bio blank. As in skip it.
Hope this helps.